<?php

namespace system\library;

use ArrayAccess;

/**
 * 表单元素生成
 * @class   Form
 * @package fast
 * @method static string token() 生成Token
 * @method static string label(string $name, string $value = null, array $options = []) label标签
 * @method static string element(string $element, array $options = [], string|bool|null $content = null 传值false即单标签) 动态创建Element元素
 * @method static string input($type, $name, string $value = null, array $options = []) 按类型生成文本框
 * @method static string text(string $name, string $value = null, array $options = []) 普通文本框
 * @method static string password(string $name, array $options = []) 密码文本框
 * @method static string hidden(string $name, string $value = null, array $options = []) 隐藏文本框
 * @method static string email(string $name, string $value = null, array $options = []) Email文本框
 * @method static string url(string $name, string $value = null, array $options = []) URL文本框
 * @method static string file(string $name, array $options = []) 文件上传组件
 * @method static string textarea(string $name, string $value = null, array $options = []) 多行文本框
 * @method static string editor(string $name, string $value = null, array $options = []) 富文本编辑器
 * @method static string select(string $name, array $list = [], string $selected = null, array $options = []) 下拉列表组件
 * @method static string selects(string $name, array $list = [], string $selected = null, array $options = []) 下拉列表组件(多选)
 * @method static string selectpicker(string $name, array $list = [], string $selected = null, array $options = []) 下拉列表组件(友好)
 * @method static string selectpickers(string $name, array $list = [], string $selected = null, array $options = []) 下拉列表组件(友好)(多选)
 * @method static string selectpage(string $name, string $value, string $url, string $field = null, string $primaryKey = null, array $options = []) 动态下拉列表组件
 * @method static string selectpages(string $name, string $value, string $url, string $field = null, string $primaryKey = null, array $options = []) 动态下拉列表组件(多选)
 * @method static string citypicker(string $name, string $value, array $options = []) 城市选择组件
 * @method static string switcher(string $name, string $value, array $options = []) 切换组件
 * @method static string datepicker(string $name, string $value, array $options = []) 日期选择组件
 * @method static string timepicker(string $name, string $value, array $options = []) 时间选择组件
 * @method static string datetimepicker(string $name, string $value, array $options = []) 日期时间选择组件
 * @method static string daterange(string $name, string $value, array $options = []) 日期区间组件
 * @method static string timerange(string $name, string $value, array $options = []) 时间区间组件
 * @method static string datetimerange(string $name, string $value, array $options = []) 日期时间区间组件
 * @method static string fieldlist(string $name, string $value, string $title = null, string $template = null, array $options = []) 字段列表组件
 * @method static string cxselect(string $url, array $names = [], array $values = [], array $options = []) 联动组件
 * @method static string selectRange(string $name, string $begin, string $end, string $selected = null, array $options = []) 选择数字区间
 * @method static string selectYear(string $name, string $begin, string $end, string $selected = null, array $options = []) 选择年
 * @method static string selectMonth(string $name, string $selected = null, array $options = [], string $format = '%m') 选择月
 * @method static string checkbox(string $name, string $value = '1', string $checked = null, array $options = []) 单个复选框
 * @method static string checkboxs(string $name, array $list = [], string $checked = null, array $options = []) 一组复选框
 * @method static string radio(string $name, string $value = null, string $checked = null, array $options = [])) 单个单选框
 * @method static string radios(string $name, array $list = [], string $checked = null, array $options = [])) 一组单选框
 * @method static string image(string $name = null, string $value, array $inputAttr = [], array $uploadAttr = [], array $chooseAttr = [], array $previewAttr = []) 上传图片组件
 * @method static string images(string $name = null, string $value, array $inputAttr = [], array $uploadAttr = [], array $chooseAttr = [], array $previewAttr = []) 上传图片组件(多图)）
 * @method static string upload(string $name = null, string $value, array $inputAttr = [], array $uploadAttr = [], array $chooseAttr = [], array $previewAttr = []) 上传文件组件
 * @method static string uploads(string $name = null, string $value, array $inputAttr = [], array $uploadAttr = [], array $chooseAttr = [], array $previewAttr = []) 上传文件组件(多文件)）
 * @method static string button(string $value = null, array $options = []) 表单button
 */
class FormBuilder
{

	/**
	 * @param $name
	 * @param $arguments
	 * @return Form
	 */
	public static function __callStatic($name, $arguments)
	{
		return call_user_func_array([Form::instance(), $name], $arguments);
	}
}

/**
 *
 * 表单元素生成
 * @from https://github.com/illuminate/html
 * @package fast
 */
class Form
{

	/**
	 * Token
	 *
	 * @var string
	 */
	protected $csrfToken = array('name' => '__token__');

	/**
	 * 已创建的标签名称
	 *
	 * @var array
	 */
	protected $labels = [];

	/**
	 * 跳过的填充value值的类型
	 *
	 * @var array
	 */
	protected $skipValueTypes = array('file', 'password', 'checkbox', 'radio');

	/**
	 * 转义HTML
	 * @var boolean
	 */
	protected $escapeHtml = true;
	protected static $instance;

	/**
	 * 获取单例
	 * @param array $options
	 * @return static
	 */
	public static function instance($options = [])
	{
		if (is_null(self::$instance)) {
			self::$instance = new static($options);
		}

		return self::$instance;
	}

	/**
	 * 设置是否转义
	 * @param boolean $escape
	 */
	public function setEscapeHtml($escape)
	{
		$this->escapeHtml = $escape;
	}

	/**
	 * 获取转义编码后的值
	 * @param string $value
	 * @return string
	 */
	public function escape($value)
	{
		if (!$this->escapeHtml) {
			return $value;
		}
		if (is_array($value)) {
			$value = json_encode($value, JSON_UNESCAPED_UNICODE);
		}
		return htmlspecialchars($value, ENT_QUOTES, 'UTF-8', false);
	}

	/**
	 * 生成Token
	 *
	 * @param string $name
	 * @param string $type
	 * @return string
	 */
	public function token($name = '__token__', $type = 'md5')
	{
		if (function_exists('token')) {
			return token($name, $type);
		}

		return '';
	}

	/**
	 * 生成Label标签
	 *
	 * @param string $name
	 * @param string $value
	 * @param array  $options
	 * @return string
	 */
	public function label($name, $value = null, $options = [])
	{
		$this->labels[] = $name;

		$options = $this->attributes($options);
		$value = $this->escape($this->formatLabel($name, $value));

		return '<label for="' . $name . '"' . $options . '>' . $value . '</label>';
	}


	/**
	 * 动态创建Element元素
	 *
	 * @param string $element
	 * @param array $options
	 * @param string|bool|null  $content 传值false即单标签
	 * @return string
	 */
	public function element($element, $options = [], $content = null)
	{
		$options = $this->attributes($options);
		if ($content === false) {
			$html = "<$element$options />";
		}else {
			$html = "<$element$options>$content</$element>";
		}
		return $html;
	}

	/**
	 * 设置标签值的格式
	 *
	 * @param string      $name
	 * @param string|null $value
	 * @return string
	 */
	protected function formatLabel($name, $value)
	{
		return $value ?: ucwords(str_replace('_', ' ', $name));
	}

	/**
	 * 生成文本框(按类型)
	 *
	 * @param string $type
	 * @param string $name
	 * @param string $value
	 * @param array  $options
	 * @return string
	 */
	public function input($type, $name, $value = null, $options = [])
	{
		if (!isset($options['name'])) {
			$options['name'] = $name;
		}

		$id = $this->getIdAttribute($name, $options);

		if (!in_array($type, $this->skipValueTypes)) {
			$value = $this->getValueAttribute($name, $value);
			$options['class'] = isset($options['class']) ? $options['class'] . (stripos($options['class'], 'form-control') !== false ? '' : ' form-control') : 'form-control';
		}

		$merge = compact('type', 'value', 'id');
		$options = array_merge($options, $merge);

		return '<input' . $this->attributes($options) . '>';
	}

	/**
	 * 生成普通文本框
	 *
	 * @param string $name
	 * @param string $value
	 * @param array  $options
	 * @return string
	 */
	public function text($name, $value = null, $options = [])
	{
		return $this->input('text', $name, $value, $options);
	}

	/**
	 * 生成密码文本框
	 *
	 * @param string $name
	 * @param array  $options
	 * @return string
	 */
	public function password($name, $options = [])
	{
		return $this->input('password', $name, '', $options);
	}

	/**
	 * 生成隐藏文本框
	 *
	 * @param string $name
	 * @param string $value
	 * @param array  $options
	 * @return string
	 */
	public function hidden($name, $value = null, $options = [])
	{
		return $this->input('hidden', $name, $value, $options);
	}

	/**
	 * 生成Email文本框
	 *
	 * @param string $name
	 * @param string $value
	 * @param array  $options
	 * @return string
	 */
	public function email($name, $value = null, $options = [])
	{
		return $this->input('email', $name, $value, $options);
	}

	/**
	 * 生成URL文本框
	 *
	 * @param string $name
	 * @param string $value
	 * @param array  $options
	 * @return string
	 */
	public function url($name, $value = null, $options = [])
	{
		return $this->input('url', $name, $value, $options);
	}

	/**
	 * 生成上传文件组件
	 *
	 * @param string $name
	 * @param array  $options
	 * @return string
	 */
	public function file($name, $options = [])
	{
		return $this->input('file', $name, null, $options);
	}

	/**
	 * 生成多行文本框
	 *
	 * @param string $name
	 * @param string $value
	 * @param array  $options
	 * @return string
	 */
	public function textarea($name, $value = null, $options = [])
	{
		if (!isset($options['name'])) {
			$options['name'] = $name;
		}

		$options = $this->setTextAreaSize($options);
		$options['id'] = $this->getIdAttribute($name, $options);
		$value = (string)$this->getValueAttribute($name, $value);

		unset($options['size']);

		$options['class'] = isset($options['class']) ? $options['class'] . (stripos($options['class'], 'form-control') !== false ? '' : ' form-control') : 'form-control';
		$options = $this->attributes($options);

		return '<textarea' . $options . '>' . $this->escape($value) . '</textarea>';
	}

	/**
	 * 生成富文本编辑器
	 *
	 * @param string $name
	 * @param string $value
	 * @param array  $options
	 * @return string
	 */
	public function editor($name, $value = null, $options = [])
	{
		$options['class'] = isset($options['class']) ? $options['class'] . ' editor' : 'editor';
		return $this->textarea($name, $value, $options);
	}

	/**
	 * 设置默认的文本框行列数
	 *
	 * @param array $options
	 * @return array
	 */
	protected function setTextAreaSize($options)
	{
		if (isset($options['size'])) {
			return $this->setQuickTextAreaSize($options);
		}

		$cols = array_get($options, 'cols', 50);
		$rows = array_get($options, 'rows', 5);

		return array_merge($options, compact('cols', 'rows'));
	}

	/**
	 * 根据size设置行数和列数
	 *
	 * @param array $options
	 * @return array
	 */
	protected function setQuickTextAreaSize($options)
	{
		$segments = explode('x', $options['size']);
		return array_merge($options, array('cols' => $segments[0], 'rows' => $segments[1]));
	}

	/**
	 * 生成滑块
	 *
	 * @param string $name
	 * @param string $min
	 * @param string $max
	 * @param string $step
	 * @param string $value
	 * @param array  $options
	 * @return string
	 */
	public function slider($name, $min, $max, $step, $value = null, $options = [])
	{
		$options = array_merge($options, ['data-slider-min' => $min, 'data-slider-max' => $max, 'data-slider-step' => $step, 'data-slider-value' => $value ? $value : '']);
		$options['class'] = isset($options['class']) ? $options['class'] . (stripos($options['class'], 'form-control') !== false ? '' : ' slider form-control') : 'slider form-control';
		return $this->input('text', $name, $value, $options);
	}

	/**
	 * 生成下拉列表框
	 *
	 * @param string $name
	 * @param array  $list
	 * @param mixed  $selected
	 * @param array  $options
	 * @return string
	 */
	public function select($name, $list = [], $selected = null, $options = [])
	{
		$selected = $this->getValueAttribute($name, $selected);

		$options['id'] = $this->getIdAttribute($name, $options);

		if (!isset($options['name'])) {
			$options['name'] = $name;
		}

		$html = [];
		foreach ($list as $value => $display) {
			$html[] = $this->getSelectOption($display, $value, $selected);
		}
		$options['class'] = isset($options['class']) ? $options['class'] . (stripos($options['class'], 'form-control') !== false ? '' : ' form-control') : 'form-control';

		$options = $this->attributes($options);
		$list = implode('', $html);

		return "<select{$options}>{$list}</select>";
	}

	/**
	 * 下拉列表(多选)
	 *
	 * @param string $name
	 * @param array  $list
	 * @param mixed  $selected
	 * @param array  $options
	 * @return string
	 */
	public function selects($name, $list = [], $selected = null, $options = [])
	{
		$options[] = 'multiple';
		return $this->select($name, $list, $selected, $options);
	}

	/**
	 * 下拉列表(友好)
	 *
	 * @param string $name
	 * @param array  $list
	 * @param mixed  $selected
	 * @param array  $options
	 * @return string
	 */
	public function selectpicker($name, $list = [], $selected = null, $options = [])
	{
		$options['class'] = isset($options['class']) ? $options['class'] . ' selectpicker' : 'selectpicker';
		return $this->select($name, $list, $selected, $options);
	}

	/**
	 * 下拉列表(友好)(多选)
	 *
	 * @param string $name
	 * @param array  $list
	 * @param mixed  $selected
	 * @param array  $options
	 * @return string
	 */
	public function selectpickers($name, $list = [], $selected = null, $options = [])
	{
		$options[] = 'multiple';
		return $this->selectpicker($name, $list, $selected, $options);
	}

	/**
	 * 生成动态下拉列表
	 *
	 * @param string $name       名称
	 * @param mixed  $value
	 * @param string $url        数据源地址
	 * @param string $field      显示的字段名称,默认为name
	 * @param string $primaryKey 主键,数据库中保存的值,默认为id
	 * @param array  $options
	 * @return string
	 */
	public function selectpage($name, $value, $url, $field = null, $primaryKey = null, $options = [])
	{
		$options = array_merge($options, ['data-source' => $url, 'data-field' => $field ? $field : 'name', 'data-primary-key' => $primaryKey ? $primaryKey : 'id']);
		$options['class'] = isset($options['class']) ? $options['class'] . ' selectpage' : 'selectpage';
		return $this->text($name, $value, $options);
	}


	/**
	 * 生成动态下拉列表(复选)
	 *
	 * @param string $name       名称
	 * @param mixed  $value
	 * @param string $url        数据源地址
	 * @param string $field      显示的字段名称,默认为name
	 * @param string $primaryKey 主键,数据库中保存的值,默认为id
	 * @param array  $options
	 * @return string
	 */
	public function selectpages($name, $value, $url, $field = null, $primaryKey = null, $options = [])
	{
		$options['data-multiple'] = "true";
		return $this->selectpage($name, $value, $url, $field, $primaryKey, $options);
	}

	/**
	 * 生成城市选择框
	 *
	 * @param string $name
	 * @param mixed  $value
	 * @param array  $options
	 * @return string
	 */
	public function citypicker($name, $value, $options = [])
	{
		$options['data-toggle'] = 'city-picker';
		return "<div class='control-relative'>" . $this->text($name, $value, $options) . "</div>";
	}

	/**
	 * 生成switch组件
	 *
	 * @param string $name
	 * @param mixed  $value
	 * @param array  $options
	 * @return string
	 */
	public function switcher($name, $value, $options = [])
	{
		$domname = str_replace(['[', ']', '.'], '', $name);
		$btn = $this->hidden($name, $value, ['id' => "c-{$domname}"]);
		$yes = 1;
		$no = 0;
		if (isset($options['yes']) && isset($options['no'])) {
			$yes = $options['yes'];
			$no = $options['no'];
		}
		$selected = $no == $value ? "fa-flip-horizontal text-gray" : "";
		$disabled = (isset($options['disabled']) && $options['disabled']) || in_array('disabled', $options) ? "disabled" : '';
		$color = isset($options['color']) ? $options['color'] : 'success';
		unset($options['yes'], $options['no'], $options['color'], $options['disabled']);
		$attr = $this->attributes($options);
		$html = <<<EOD
{$btn}
<a href="javascript:;" data-toggle="switcher" class="btn-switcher {$disabled}" data-input-id="c-{$domname}" data-yes="{$yes}" data-no="{$no}" {$attr}><i class="fa fa-toggle-on text-{$color} {$selected} fa-2x"></i></a>
EOD;
		return $html;
	}

	/**
	 * 日期选择器
	 * @param string $name
	 * @param mixed  $value
	 * @param array  $options
	 * @return string
	 */
	public function datepicker($name, $value = null, $options = [])
	{
		$defaults = [
			'data-date-format' => "YYYY-MM-DD",
		];
		$options = array_merge($defaults, $options);
		$value = is_numeric($value) ? date("Y-m-d", $value) : $value;
		return $this->datetimepicker($name, $value, $options);
	}

	/**
	 * 时间选择器
	 *
	 * @param string $name
	 * @param mixed  $value
	 * @param array  $options
	 * @return string
	 */
	public function timepicker($name, $value, $options = [])
	{
		$defaults = [
			'data-date-format' => "HH:mm:ss",
		];
		$options = array_merge($defaults, $options);
		$value = is_numeric($value) ? date("H:i:s", $value) : $value;
		return $this->datetimepicker($name, $value, $options);
	}

	/**
	 * 日期时间选择器
	 *
	 * @param string $name
	 * @param mixed  $value
	 * @param array  $options
	 * @return string
	 */
	public function datetimepicker($name, $value, $options = [])
	{
		$defaults = [
			'data-date-format' => "YYYY-MM-DD HH:mm:ss",
			'data-use-current' => "true",
		];
		$value = is_numeric($value) ? date("Y-m-d H:i:s", $value) : $value;
		$options = array_merge($defaults, $options);
		$options['class'] = isset($options['class']) ? $options['class'] . ' datetimepicker' : 'datetimepicker';
		return $this->text($name, $value, $options);
	}

	/**
	 * 日期区间
	 *
	 * @param string $name
	 * @param string $value
	 * @param array  $options
	 * @return string
	 */
	public function daterange($name, $value, $options = [])
	{
		$defaults = [
			'data-locale' => [
				'format' => 'YYYY-MM-DD'
			]
		];
		$options = array_merge($defaults, $options);
		return $this->datetimerange($name, $value, $options);
	}

	/**
	 * 时间区间
	 *
	 * @param string $name
	 * @param string $value
	 * @param array  $options
	 * @return string
	 */
	public function timerange($name, $value, $options = [])
	{
		$defaults = [
			'data-locale'                  => [
				'format' => 'HH:mm:ss'
			],
			'data-ranges'                  => [],
			'data-show-custom-range-label' => "false",
			'data-time-picker'             => "true",
		];
		$options = array_merge($defaults, $options);
		return $this->datetimerange($name, $value, $options);
	}

	/**
	 * 日期时间区间
	 *
	 * @param string $name
	 * @param string $value
	 * @param array  $options
	 * @return string
	 */
	public function datetimerange($name, $value, $options = [])
	{
		$defaults = [
			'data-locale' => [
				'format' => 'YYYY-MM-DD HH:mm:ss'
			]
		];
		$options = array_merge($defaults, $options);
		$options['class'] = isset($options['class']) ? $options['class'] . ' datetimerange' : 'datetimerange';
		return $this->text($name, $value, $options);
	}

	/**
	 * 生成字段列表组件
	 *
	 * @param string $name
	 * @param mixed  $value
	 * @param array  $title
	 * @param string $template
	 * @param array  $options
	 * @return string
	 */
	public function fieldlist($name, $value, $title = null, $template = null, $options = [])
	{
		$append = __('Append');
		$template = $template ? 'data-template="' . $template . '"' : '';
		$attributes = $this->attributes($options);
		if (is_null($title)) {
			$title = [__('Key'), __('Value')];
		}
		$ins = implode("\n", array_map(function ($value) {
			return "<ins>{$value}</ins>";
		}, $title));
		$value = is_array($value) ? json_encode($value) : $value;
		$html = <<<EOD
<dl class="fieldlist" data-name="{$name}" {$template} {$attributes}>
	<dd>
		{$ins}
	</dd>
	<dd><a href="javascript:;" class="btn btn-sm btn-success btn-append"><i class="fa fa-plus"></i> {$append}</a></dd>
	<textarea name="{$name}" class="form-control hide" cols="30" rows="5">{$value}</textarea>
</dl>
EOD;
		return $html;
	}

	/**
	 * 生成联动下拉列表
	 *
	 * @param string $url     联动获取数据源的URL地址
	 * @param array  $names   联动字段名称
	 * @param array  $values  联动字段默认选中的值
	 * @param array  $options 扩展属性
	 * @return string
	 */
	public function cxselect($url, $names = [], $values = [], $options = [])
	{
		$classes = [];
		$cxselect = [];
		$attributes = $this->attributes($options);
		foreach ($names as $index => $value) {
			$level = $index + 1;
			$class = "cxselect-{$level}";
			$classes[] = $class;
			$selectValue = isset($values[$value]) ? $values[$value] : (isset($values[$index]) ? $values[$index] : '');

			$cxselect[] = <<<EOD
<select class="{$class} form-control" name="{$value}" data-value="{$selectValue}" data-url="{$url}?level={$level}&name={$value}" {$attributes}></select>
EOD;
		}
		$cxselect = implode("\n", $cxselect);
		$selects = implode(',', $classes);
		$html = <<<EOD
<div class="form-inline" data-toggle="cxselect" data-selects="{$selects}">
{$cxselect}
</div>
EOD;
		return $html;
	}

	/**
	 * 创建一个下拉列表选择区间组件
	 *
	 * @param string $name
	 * @param string $begin
	 * @param string $end
	 * @param string $selected
	 * @param array  $options
	 * @return string
	 */
	public function selectRange($name, $begin, $end, $selected = null, $options = [])
	{
		$range = array_combine($range = range($begin, $end), $range);
		return $this->select($name, $range, $selected, $options);
	}

	/**
	 * 生成选择年组件
	 *
	 * @param string $name
	 * @param string $begin
	 * @param string $end
	 * @param string $selected
	 * @param array  $options
	 * @return string
	 */
	public function selectYear($name, $begin, $end, $selected, $options)
	{
		return call_user_func_array(array($this, 'selectRange'), func_get_args());
	}

	/**
	 * 生成选择月组件
	 *
	 * @param string $name
	 * @param string $selected
	 * @param array  $options
	 * @param string $format
	 * @return string
	 */
	public function selectMonth($name, $selected = null, $options = [], $format = '%m')
	{
		$months = [];

		foreach (range(1, 12) as $month) {
			$months[$month] = strftime($format, mktime(0, 0, 0, $month, 1));
		}

		return $this->select($name, $months, $selected, $options);
	}

	/**
	 * 根据传递的值生成option
	 *
	 * @param string $display
	 * @param string $value
	 * @param string $selected
	 * @return string
	 */
	public function getSelectOption($display, $value, $selected)
	{
		if (is_array($display)) {
			return $this->optionGroup($display, $value, $selected);
		}

		return $this->option($display, $value, $selected);
	}

	/**
	 * 生成optionGroup
	 *
	 * @param array  $list
	 * @param string $label
	 * @param string $selected
	 * @return string
	 */
	protected function optionGroup($list, $label, $selected)
	{
		$html = [];

		foreach ($list as $value => $display) {
			$html[] = $this->option($display, $value, $selected);
		}

		return '<optgroup label="' . $this->escape($label) . '">' . implode('', $html) . '</optgroup>';
	}

	/**
	 * 生成option选项
	 *
	 * @param string $display
	 * @param string $value
	 * @param string $selected
	 * @return string
	 */
	protected function option($display, $value, $selected)
	{
		$selected = $this->getSelectedValue($value, $selected);

		$options = array('value' => $this->escape($value), 'selected' => $selected);

		return '<option' . $this->attributes($options) . '>' . $this->escape($display) . '</option>';
	}

	/**
	 * 检测value是否选中
	 *
	 * @param string $value
	 * @param string $selected
	 * @return string
	 */
	protected function getSelectedValue($value, $selected)
	{
		if (is_array($selected)) {
			return in_array($value, $selected) ? 'selected' : null;
		}

		return ((string)$value == (string)$selected) ? 'selected' : null;
	}

	/**
	 * 生成复选按钮
	 *
	 * @param string $name
	 * @param mixed  $value
	 * @param bool   $checked
	 * @param array  $options
	 * @return string
	 */
	public function checkbox($name, $value = 1, $checked = null, $options = [])
	{
		if ($checked) {
			$options['checked'] = 'checked';
		}

		return $this->input('checkbox', $name, $value, $options);
	}

	/**
	 * 生成一组筛选框
	 *
	 * @param string $name
	 * @param array  $list
	 * @param mixed  $checked
	 * @param array  $options
	 * @return string
	 */
	public function checkboxs($name, $list, $checked, $options = [])
	{
		$html = [];
		$checked = is_null($checked) ? [] : $checked;
		$checked = is_array($checked) ? $checked : explode(',', $checked);
		foreach ($list as $k => $v) {
			$options['id'] = "{$name}-{$k}";
			$html[] = sprintf(Form::label("{$name}-{$k}", "%s {$v}"), Form::checkbox("{$name}[{$k}]", $k, in_array($k, $checked), $options));
		}
		return '<div class="checkbox">' . implode(' ', $html) . '</div>';
	}

	/**
	 * 生成单选按钮
	 *
	 * @param string $name
	 * @param mixed  $value
	 * @param bool   $checked
	 * @param array  $options
	 * @return string
	 */
	public function radio($name, $value = null, $checked = null, $options = [])
	{
		if (is_null($value)) {
			$value = $name;
		}

		if ($checked) {
			$options['checked'] = 'checked';
		}

		return $this->input('radio', $name, $value, $options);
	}

	/**
	 * 生成一组单选框
	 *
	 * @param string $name
	 * @param array  $list
	 * @param mixed  $checked
	 * @param array  $options
	 * @return string
	 */
	public function radios($name, $list, $checked = null, $options = [])
	{
		$html = [];
		$checked = is_null($checked) ? key($list) : $checked;
		$checked = is_array($checked) ? $checked : explode(',', $checked);
		foreach ($list as $k => $v) {
			$options['id'] = "{$name}-{$k}";
			$html[] = sprintf(Form::label("{$name}-{$k}", "%s {$v}"), Form::radio($name, $k, in_array($k, $checked), $options));
		}
		return '<div class="radio">' . implode(' ', $html) . '</div>';
	}

	/**
	 * 生成上传图片组件(单图)
	 *
	 * @param string $name
	 * @param string $value
	 * @param array  $inputAttr
	 * @param array  $uploadAttr
	 * @param array  $chooseAttr
	 * @param array  $previewAttr
	 * @return string
	 */
	public function image($name = null, $value = null, $inputAttr = [], $uploadAttr = [], $chooseAttr = [], $previewAttr = [])
	{
		$default = [
			'data-mimetype' => 'image/gif,image/jpeg,image/png,image/jpg,image/bmp'
		];
		$uploadAttr = is_array($uploadAttr) ? array_merge($default, $uploadAttr) : $uploadAttr;
		$chooseAttr = is_array($chooseAttr) ? array_merge($default, $chooseAttr) : $chooseAttr;
		return $this->uploader($name, $value, $inputAttr, $uploadAttr, $chooseAttr, $previewAttr);
	}

	/**
	 * 生成上传图片组件(多图)
	 *
	 * @param string $name
	 * @param string $value
	 * @param array  $inputAttr
	 * @param array  $uploadAttr
	 * @param array  $chooseAttr
	 * @param array  $previewAttr
	 * @return string
	 */
	public function images($name = null, $value = null, $inputAttr = [], $uploadAttr = [], $chooseAttr = [], $previewAttr = [])
	{
		$default = [
			'data-multiple' => 'true',
			'data-mimetype' => 'image/gif,image/jpeg,image/png,image/jpg,image/bmp'
		];
		$uploadAttr = is_array($uploadAttr) ? array_merge($default, $uploadAttr) : $uploadAttr;
		$chooseAttr = is_array($chooseAttr) ? array_merge($default, $chooseAttr) : $chooseAttr;
		return $this->uploader($name, $value, $inputAttr, $uploadAttr, $chooseAttr, $previewAttr);
	}

	/**
	 * 生成上传文件组件(单文件)
	 *
	 * @param string $name
	 * @param string $value
	 * @param array  $inputAttr
	 * @param array  $uploadAttr
	 * @param array  $chooseAttr
	 * @param array  $previewAttr
	 * @return string
	 */
	public function upload($name = null, $value = null, $inputAttr = [], $uploadAttr = [], $chooseAttr = [], $previewAttr = [])
	{
		return $this->uploader($name, $value, $inputAttr, $uploadAttr, $chooseAttr, $previewAttr);
	}

	/**
	 * 生成上传文件组件(多文件)
	 *
	 * @param string $name
	 * @param string $value
	 * @param array  $inputAttr
	 * @param array  $uploadAttr
	 * @param array  $chooseAttr
	 * @param array  $previewAttr
	 * @return string
	 */
	public function uploads($name = null, $value = null, $inputAttr = [], $uploadAttr = [], $chooseAttr = [], $previewAttr = [])
	{
		$default = [
			'data-multiple' => 'true',
		];
		$uploadAttr = is_array($uploadAttr) ? array_merge($default, $uploadAttr) : $uploadAttr;
		$chooseAttr = is_array($chooseAttr) ? array_merge($default, $chooseAttr) : $chooseAttr;
		return $this->uploader($name, $value, $inputAttr, $uploadAttr, $chooseAttr, $previewAttr);
	}

	protected function uploader($name = null, $value = null, $inputAttr = [], $uploadAttr = [], $chooseAttr = [], $previewAttr = [])
	{
		$domname = str_replace(['[', ']', '.'], '', $name);
		$options = [
			'id'            => "plupload-{$domname}",
			'class'         => "btn btn-danger plupload",
			'data-input-id' => "c-{$domname}",
		];
		$upload = $uploadAttr === false ? false : true;
		$choose = $chooseAttr === false ? false : true;
		$preview = $previewAttr === false ? false : true;
		if ($preview) {
			$options['data-preview-id'] = "p-{$domname}";
		}
		$uploadBtn = $upload ? $this->button('<i class="fa fa-upload"></i> ' . __('Upload'), array_merge($options, $uploadAttr)) : '';
		$options = [
			'id'            => "fachoose-{$domname}",
			'class'         => "btn btn-danger fachoose",
			'data-input-id' => "c-{$domname}",
		];
		if ($preview) {
			$options['data-preview-id'] = "p-{$domname}";
		}
		$chooseBtn = $choose ? $this->button('<i class="fa fa-list"></i> ' . __('Choose'), array_merge($options, $chooseAttr)) : '';
		$previewAttrHtml = $this->attributes($previewAttr);
		$previewArea = $preview ? '<ul class="row list-inline plupload-preview" id="p-' . $domname . '" ' . $previewAttrHtml . '></ul>' : '';
		$input = $this->text($name, $value, array_merge(['size' => 50, 'id' => "c-{$domname}"], $inputAttr));
		$html = <<<EOD
<div class="input-group">
				{$input}
				<div class="input-group-addon no-border no-padding">
					<span>{$uploadBtn}</span>
					<span>{$chooseBtn}</span>
				</div>
				<span class="msg-box n-right" for="c-{$domname}"></span>
			</div>
			{$previewArea}
EOD;
		return $html;
	}

	/**
	 * 生成一个按钮
	 *
	 * @param string $value
	 * @param array  $options
	 * @return string
	 */
	public function button($value = null, $options = [])
	{
		if (!array_key_exists('type', $options)) {
			$options['type'] = 'button';
		}

		return '<button' . $this->attributes($options) . '>' . $value . '</button>';
	}

	/**
	 * 获取ID属性值
	 *
	 * @param string $name
	 * @param array  $attributes
	 * @return string
	 */
	public function getIdAttribute($name, $attributes)
	{
		if (array_key_exists('id', $attributes)) {
			return $attributes['id'];
		}

		if (in_array($name, $this->labels)) {
			return $name;
		}
	}

	/**
	 * 获取Value属性值
	 *
	 * @param string $name
	 * @param string $value
	 * @return string
	 */
	public function getValueAttribute($name, $value = null)
	{
		if (is_null($name)) {
			return $value;
		}

		if (!is_null($value)) {
			return $value;
		}
	}

	/**
	 * 数组转换成一个HTML属性字符串。
	 *
	 * @param array $attributes
	 * @return string
	 */
	public function attributes($attributes)
	{
		$html = [];
		// 假设我们的keys 和 value 是相同的,
		// 拿HTML“required”属性来说,假设是['required']数组,
		// 会已 required="required" 拼接起来,而不是用数字keys去拼接
		foreach ((array)$attributes as $key => $value) {
			$element = $this->attributeElement($key, $value);
			if (!is_null($element)) {
				$html[] = $element;
			}
		}
		return count($html) > 0 ? ' ' . implode(' ', $html) : '';
	}

	/**
	 * 拼接成一个属性。
	 *
	 * @param string $key
	 * @param string $value
	 * @return string
	 */
	protected function attributeElement($key, $value)
	{
		if (is_numeric($key)) {
			$key = $value;
		}
		if (!is_null($value)) {
			if (is_array($value) || stripos($value, '"') !== false) {
				$value = is_array($value) ? json_encode($value, JSON_UNESCAPED_UNICODE) : $value;
				return $key . "='" . $value . "'";
			} else {
				return $key . '="' . $value . '"';
			}
		}
	}
}

class Arr
{

	/**
	 * Determine whether the given value is array accessible.
	 *
	 * @param mixed $value
	 * @return bool
	 */
	public static function accessible($value)
	{
		return is_array($value) || $value instanceof ArrayAccess;
	}

	/**
	 * Determine if the given key exists in the provided array.
	 *
	 * @param \ArrayAccess|array $array
	 * @param string|int         $key
	 * @return bool
	 */
	public static function exists($array, $key)
	{
		if ($array instanceof ArrayAccess) {
			return $array->offsetExists($key);
		}
		return array_key_exists($key, $array);
	}

	/**
	 * Get an item from an array using "dot" notation.
	 *
	 * @param \ArrayAccess|array $array
	 * @param string             $key
	 * @param mixed              $default
	 * @return mixed
	 */
	public static function get($array, $key, $default = null)
	{
		if (!static::accessible($array)) {
			return $default;
		}
		if (is_null($key)) {
			return $array;
		}
		if (static::exists($array, $key)) {
			return $array[$key];
		}
		foreach (explode('.', $key) as $segment) {
			if (static::accessible($array) && static::exists($array, $segment)) {
				$array = $array[$segment];
			} else {
				return $default;
			}
		}
		return $array;
	}

	/**
	 * Get all of the given array except for a specified array of items.
	 *
	 * @param array        $array
	 * @param array|string $keys
	 * @return array
	 */
	public static function except($array, $keys)
	{
		static::forget($array, $keys);
		return $array;
	}

	/**
	 * Remove one or many array items from a given array using "dot" notation.
	 *
	 * @param array        $array
	 * @param array|string $keys
	 * @return void
	 */
	public static function forget(&$array, $keys)
	{
		$original = &$array;
		$keys = (array)$keys;
		if (count($keys) === 0) {
			return;
		}
		foreach ($keys as $key) {
			// if the exact key exists in the top-level, remove it
			if (static::exists($array, $key)) {
				unset($array[$key]);
				continue;
			}
			$parts = explode('.', $key);
			// clean up before each pass
			$array = &$original;
			while (count($parts) > 1) {
				$part = array_shift($parts);
				if (isset($array[$part]) && is_array($array[$part])) {
					$array = &$array[$part];
				} else {
					continue 2;
				}
			}
			unset($array[array_shift($parts)]);
		}
	}
}

if (!function_exists('array_get')) {

	/**
	 * Get an item from an array using "dot" notation.
	 *
	 * @param \ArrayAccess|array $array
	 * @param string             $key
	 * @param mixed              $default
	 * @return mixed
	 */
	function array_get($array, $key, $default = null)
	{
		return Arr::get($array, $key, $default);
	}
}
if (!function_exists('e')) {

	/**
	 * Escape HTML special characters in a string.
	 *
	 *
	 * @return string
	 */
	function e($value)
	{
		if (is_array($value)) {
			$value = json_encode($value, JSON_UNESCAPED_UNICODE);
		}
		return htmlspecialchars($value, ENT_QUOTES, 'UTF-8', false);
	}
}
if (!function_exists('array_except')) {

	/**
	 * Get all of the given array except for a specified array of items.
	 *
	 * @param array        $array
	 * @param array|string $keys
	 * @return array
	 */
	function array_except($array, $keys)
	{
		return Arr::except($array, $keys);
	}
}
